1AVRDC-The World Vegetable Center/ICRISAT Project, Niamey, Niger.
2AVRDC-The World Vegetable Center, Sub-Regional Station for West Africa, Samanko, Mali.
3 Institut National de la Recherche Agronomique du Niger (INRAN), Niamey, Niger.
4 Centre de Coopération Internationale en Recherche Agronomique pour le Développement ICRISAT, Niamey, Niger.
5International Crops Research Institute for the Semi Arid Tropics (ICRISAT), Niamey, Niger.
6AVRDC-The World Vegetable Center, Yaoundé, Cameroon.
Email: [email protected],[email protected]